A manga adaptation of Edogawa Rampo's popular detective novel about the cocky and voyeuristic Kouda Saburou who accidentally finds out that the ceiling of his closet opens up to a roof space in which he can actually roam around to spy on the tenants in his apt building. To his great delight, he discovers that his neighbors have peculiar personalities and lead secret lives in the supposedly "private" sanctuary of their rooms. Feeling smug and superior in his illicit knowledge, Kouda finally meets his match in both wits and style in the dashing Detective Akechi Kogorou who's investigating a series of suspicious incidents at his building.